Added routine to check signals.

diff --git a/util/led/error.c b/util/led/error.c
new file mode 100644 (file)
index 0000000..59c011e
--- /dev/null
+++ b/util/led/error.c
@@ -0,0 +1,71 @@
+#ifndef lint
+static char rcsid[] = "$Header$";
+#endif
+
+#include <stdio.h>
+#include <signal.h>
+#include "out.h"
+#include "const.h"
+
+static short   nerrors = 0;
+
+static
+stop()
+{
+       extern char     *outputname;
+
+       if (nerrors)
+               unlink(outputname);
+
+       exit(nerrors);
+}
+
+trap_signals()
+{
+       static int      trap_them[] = { SIGHUP, SIGINT, SIGQUIT, SIGTERM, 0 };
+       register int    *ip;
+
+       for (ip = trap_them; *ip; ip++)
+               if (signal(*ip, stop) == SIG_IGN)
+                       signal(*ip, SIG_IGN);   /* Oops, reset. */
+}
+
+/* VARARGS1 */
+fatal(format, a1, a2, a3, a4)
+       char    *format;
+{
+       nerrors++;
+       diag("fatal", format, a1, a2, a3, a4);
+       stop();
+}
+
+/* VARARGS1 */
+warning(format, a1, a2, a3, a4)
+       char    *format;
+{
+       diag("warning", format, a1, a2, a3, a4);
+}
+
+/* VARARGS1 */
+error(format, a1, a2, a3, a4)
+       char    *format;
+{
+       nerrors++;
+       diag("error", format, a1, a2, a3, a4);
+}
+
+static
+diag(tail, format, a1, a2, a3, a4)
+       char    *tail;
+       char    *format;
+{
+       extern char     *progname, *archname, *modulname; 
+
+       fprintf(stderr, "%s: ", progname);
+       if (archname)
+               fprintf(stderr, "%s: ", archname);
+       if (modulname)
+               fprintf(stderr, "%s: ", modulname);
+       fprintf(stderr, format, a1, a2, a3, a4);
+       fprintf(stderr, " (%s)\n", tail);
+}